+BEGIN {
+ eval { require Config };
+ die 'OS unsupported' if $@;
+ Config->import(qw/%Config/);
+}
+
+my @DEFINES;
+
+my $pl = $Config{perl_patchlevel};
+print "Checking perl patchlevel... ";
+if (defined $pl && length $pl) {
+ $pl = int $pl;
+ push @DEFINES, '-DVMG_PERL_PATCHLEVEL=' . $pl;
+ print $pl, "\n";
+} else {
+ $pl = undef;
+ print "none\n";
+}
+
+my $is_as = 0;
+print "Checking if this is ActiveState Perl 5.8.8 build 822 or higher... ";
+if ($^V eq v5.8.8) {
+ eval {
+ require ActivePerl;
+ 1;
+ } and do {
+ if (defined &ActivePerl::BUILD) {
+ my $build = int ActivePerl::BUILD();
+ if ($build >= 822) {
+ $is_as = 1;
+ push @DEFINES, '-DVMG_COMPAT_ARRAY_PUSH_NOLEN=1';
+ }
+ }
+ }
+}
+print $is_as ? "yes\n" : "no\n";
+
+my $is_5110rel = 0;
+print "Checking if this is a released perl 5.11.0 or higher... ";
+if ($^V ge v5.11.0 and not defined $pl) {
+ my $describe = $Config{git_describe};
+ # An empty 'describe' is fine
+ if (defined $describe and $describe !~ /^GitLive-/) {
+ $is_5110rel = 1;
+ push @DEFINES, '-DVMG_COMPAT_ARRAY_PUSH_NOLEN=0';
+ }
+}
+print $is_5110rel ? "yes\n" : "no\n";
+
+# Threads, Windows and 5.8.x don't seem to be best friends
+if ($^O eq 'MSWin32' && $^V lt v5.9.0) {
+ push @DEFINES, '-DVMG_MULTIPLICITY=0';
+}
+
+# Fork emulation got "fixed" in 5.10.1
+if ($^O eq 'MSWin32' && $^V lt v5.10.1) {
+ push @DEFINES, '-DVMG_FORKSAFE=0';
+}
+
+@DEFINES = (DEFINE => join ' ', @DEFINES) if @DEFINES;
+
+my $dist = 'Variable-Magic';
+
+(my $name = $dist) =~ s{-}{::}g;
+
+(my $file = $dist) =~ s{-}{/}g;
+$file = "lib/$file.pm";
+
+my %PREREQ_PM = (
+ 'Carp' => 0,
+ 'Exporter' => 0,
+ 'XSLoader' => 0,
+ 'base' => 0,
+);
+
+my %META = (
+ configure_requires => {
+ 'Config' => 0,
+ 'ExtUtils::MakeMaker' => 0,
+ },
+ build_requires => {
+ 'Carp' => 0,
+ 'Config' => 0,
+ 'ExtUtils::MakeMaker' => 0,
+ 'Test::More' => 0,
+ %PREREQ_PM,
+ },
+ dynamic_config => 1,
+ resources => {
+ bugtracker => "http://rt.cpan.org/NoAuth/ReportBug.html?Queue=$dist",
+ homepage => "http://search.cpan.org/dist/$dist/",
+ license => 'http://dev.perl.org/licenses/',
+ repository => "http://git.profvince.com/?p=perl%2Fmodules%2F$dist.git",
+ },
+);
+